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Atomic Structure of Americium and Holmium


Atomic Structure of Holmium and Americium


Atomic Properties

Atomic Number
95   
23
67   
99+

Electron Configuration
[Rn] 5f7 7s2   
[Xe] 4f11 6s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
DHCP-Crystal-Structure-of-Americium.jpg#100   
HCP-Crystal-Structure-of-Holmium.jpg#100   

Atom
  
  

Number of Protons
95   
23
67   
99+

Number of Neutrons
148   
12
98   
34

Number of Electrons
95   
23
67   
99+

Radius of an Atom
  
  

Atomic Radius
173.00 pm   
21
176.00 pm   
18

Covalent Radius
180.00 pm   
21
192.00 pm   
17

Van der Waals Radius
244.00 pm   
10
216.00 pm   
24

Atomic Weight
243.00 amu   
20
164.93 amu   
99+

Atomic Volume
17.86 cm3/mol   
29
18.70 cm3/mol   
24

Adjacent Atomic Numbers
  
  

Previous Element
Plutonium
  
Dysprosium
  

Next Element
Curium
  
Erbium
  

Valence Electron Potential
44.00 (-eV)   
40
47.90 (-eV)   
31

Lattice Constant
346.81 pm   
99+
357.73 pm   
38

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
Not Available   
1.57   
17

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